@article{steptoe2012multimodalenvironments,
 author = {Steptoe W, Steed A},
 title = {Multimodal Data Capture and Analysis of Interaction in Immersive Collaborative Virtual Environments},
 year = {2012},
 journal = {Presence: Teleoperators and Virtual Environments},
 volume = {21},
 number = {4},
}